There were many times when I've wanted Lily to wear flats for a photo. They are stylish and tacky-free.
Unfortunately, it's surprisingly difficult to find children's ballet flats. Then I came across this nifty tutorial on how to make them yourself! Adults and kids alike!
See the tutorial here.
Pictured to the left is a homemade pair I loved on etsy by hydraheart.
You could probably use the above tutorial and add your own style (ie buttons and shape of pattern around feet.)
Another cute mary jane tutorial for kids is here on Craftzine.